JPS57167013A - Electric shutter device for camera - Google Patents

Electric shutter device for camera

Info

Publication number
JPS57167013A
JPS57167013A JP5170381A JP5170381A JPS57167013A JP S57167013 A JPS57167013 A JP S57167013A JP 5170381 A JP5170381 A JP 5170381A JP 5170381 A JP5170381 A JP 5170381A JP S57167013 A JPS57167013 A JP S57167013A
Authority
JP
Japan
Prior art keywords
trigger
power supply
signal
count
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5170381A
Other languages
Japanese (ja)
Inventor
Kazuo Shiozawa
Takeshi Inagaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP5170381A priority Critical patent/JPS57167013A/en
Publication of JPS57167013A publication Critical patent/JPS57167013A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/26—Power supplies; Circuitry or arrangement to switch on the power source; Circuitry to check the power source voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Shutters For Cameras (AREA)

Abstract

PURPOSE:To prevent useless consumption of power supply battery, by stopping the power supply after a prescribed time from a release signal if no trigger switch is activated. CONSTITUTION:If no trigger switch TG is operated, a switch signal output circuit GC outputs no trigger signal. Thus, a control circuit SC makes to new start of count due to a trigger signal and no transistor T1 to be turned off. Then, the control circuit SC keeps the count from the input of a release signal and turns off a shutter opening magnet beta if a prescribed time longer than the normal exposure time elapses through the count even if no trigger signa is inputted, and the sequence end signal is outputted to a reset circuit RS to stop the power supply. Thus, even if the trigger switch is inoperative, the waste of power supply battey can be prevented.
JP5170381A 1981-04-08 1981-04-08 Electric shutter device for camera Pending JPS57167013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5170381A JPS57167013A (en) 1981-04-08 1981-04-08 Electric shutter device for camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5170381A JPS57167013A (en) 1981-04-08 1981-04-08 Electric shutter device for camera

Publications (1)

Publication Number Publication Date
JPS57167013A true JPS57167013A (en) 1982-10-14

Family

ID=12894248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5170381A Pending JPS57167013A (en) 1981-04-08 1981-04-08 Electric shutter device for camera

Country Status (1)

Country Link
JP (1) JPS57167013A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2658329A1 (en) * 1990-02-14 1991-08-16 Asahi Optical Co Ltd ELECTRONICALLY CONTROLLED CAMERA WITH TIME CONTROL OF POWER SUPPLY.
JPH0490063U (en) * 1990-03-03 1992-08-06

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2658329A1 (en) * 1990-02-14 1991-08-16 Asahi Optical Co Ltd ELECTRONICALLY CONTROLLED CAMERA WITH TIME CONTROL OF POWER SUPPLY.
JPH0490063U (en) * 1990-03-03 1992-08-06

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